Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for adjusting a gate-off voltage, comprising: obtaining a display brightness of a display panel by at least one photosensitive element to obtain a contrast of the display brightness of the display panel by a contrast detecting module; and comparing the contrast with an initial contrast, and adjusting the gate-off voltage of the display panel by a voltage adjusting module if the difference between the contrast and the initial contrast is greater than the set threshold; wherein the photosensitive elements are plural; wherein the step of obtaining the contrast of the display brightness of the display panel by the at least one photosensitive element comprising: obtaining maximum values and minimum values of display brightness of the display panel by a plurality of photosensitive elements disposed at edges of the display panel; transmitting the maximum value and the minimum value of the display brightness to a system board or a control board by the contrast detecting module, such that the system board or the control panel obtaining a plurality of sets of contrast measurement values based on the maximum value and minimum value of the plurality of sets of the display brightness, and averaging the plurality of sets of contrast measurement values to generate the contrast.
This invention relates to adjusting the gate-off voltage of a display panel to improve display quality. The problem addressed is maintaining consistent contrast in varying ambient lighting conditions, which can degrade visual performance. The solution involves using multiple photosensitive elements positioned at the edges of the display panel to measure display brightness. These elements capture maximum and minimum brightness values, which are transmitted to a system or control board. A contrast detecting module processes these values to generate multiple sets of contrast measurement values, which are then averaged to produce a final contrast value. This measured contrast is compared to an initial contrast value. If the difference exceeds a predefined threshold, a voltage adjusting module modifies the gate-off voltage of the display panel to correct the contrast. The system dynamically adjusts the display's electrical characteristics to compensate for environmental changes, ensuring optimal viewing conditions. The use of multiple sensors and averaging improves accuracy, while the automated voltage adjustment enhances display stability. This method is particularly useful in environments with fluctuating ambient light, such as outdoor or high-contrast settings.
2. The method of claim 1 , wherein a number of the photosensitive elements are at least four, and the photosensitive elements are disposed on four edges of a rectangular display panel, or at four corners of a rectangular display panel, respectively.
3. The method of claim 1 , wherein the step of comparing the contrast with the initial contrast, and adjusting the gate-off voltage of the display panel if the difference between the contrast and the initial contrast is greater than the set threshold comprising: comparing the contrast with the initial contrast, and each time when the difference between the contrast and the initial contrast is greater than the set threshold value, increasing the gate-off voltage of the display panel on a basis of the initial gate-off voltage with a set value.
4. A device for adjusting a gate-off voltage comprising: a contrast detecting module including at least one photosensitive element, and obtaining a contrast based on a display brightness of a display panel obtained by the photosensitive element; a voltage adjusting module connected to the contrast detecting module, and comparing the contrast with an initial contrast, if the difference between the contrast and the initial contrast is greater than a set threshold value, the voltage adjusting module adjusting the gate-off voltage of the display panel; wherein the contrast detecting module includes a plurality of photosensitive elements arranged at an edge of the display panel; wherein the contrast detecting module further comprises: a brightness obtaining unit connecting to the plurality of photosensitive elements and configuring to obtain maximum values and minimum values of the display brightness of the display panel by the plurality of the photosensitive elements, respectively; and a contrast obtaining unit connecting to the brightness obtaining unit for transmitting the maximum value and the minimum value of the display brightness to a system board or a control board, respectively, such that the system board or the control panel obtains a plurality of sets of contrast measurement values based on the maximum values and minimum values of the plurality of sets of the display brightness and obtains the contrast by averaging the plurality of sets of contrast measurement values.
This invention relates to a device for dynamically adjusting the gate-off voltage of a display panel to improve display quality. The device addresses the problem of inconsistent display brightness and contrast, which can degrade visual performance. The system includes a contrast detecting module with multiple photosensitive elements positioned at the edges of the display panel. These elements measure the display brightness, capturing maximum and minimum brightness values. A brightness obtaining unit processes these values, while a contrast obtaining unit calculates contrast by averaging multiple sets of contrast measurements derived from the brightness data. The contrast is then compared to an initial reference contrast. If the difference exceeds a predefined threshold, a voltage adjusting module modifies the gate-off voltage of the display panel to correct the contrast. This ensures consistent brightness and contrast across the display, enhancing visual quality. The system operates by continuously monitoring brightness variations and adjusting voltage in real-time, improving display uniformity and reducing power consumption. The invention is particularly useful in applications requiring high-precision display performance, such as professional monitors or medical imaging devices.
5. The device of claim 4 , wherein the photosensitive element is a photosensitive resistor.
A device for detecting light intensity using a photosensitive resistor is disclosed. The device includes a housing with an opening to allow light to enter, a photosensitive resistor positioned to receive the light, and a circuit connected to the resistor to measure changes in resistance caused by light exposure. The photosensitive resistor changes resistance inversely with light intensity, enabling the circuit to convert resistance variations into an electrical signal proportional to light levels. The housing may include a filter to modify the light spectrum before it reaches the resistor, ensuring accurate measurements in specific applications. The circuit may include amplification and signal conditioning components to enhance measurement precision. This device is useful in applications requiring light detection, such as ambient light sensing, optical switching, or environmental monitoring, where a simple, cost-effective solution is needed. The use of a photosensitive resistor provides a direct, analog response to light intensity, eliminating the need for complex digital processing in some implementations. The device may be integrated into larger systems or used as a standalone sensor.
6. The device of claim 4 , further comprising: a power integrating circuit connected to the voltage adjusting module and generating an initial gate-off voltage, such that the voltage adjusting module adjusting the gate-off voltage on a basis of the initial gate-off voltage.
This invention relates to power management systems, specifically for adjusting gate-off voltages in electronic circuits to improve efficiency and performance. The problem addressed is the need for precise control of gate-off voltages in power devices, such as transistors, to minimize power loss and enhance reliability. The device includes a voltage adjusting module that regulates the gate-off voltage applied to a power switch, such as a transistor. The voltage adjusting module ensures the gate-off voltage is set to an optimal level to prevent leakage current while maintaining efficient switching performance. To achieve this, the device further includes a power integrating circuit connected to the voltage adjusting module. The power integrating circuit generates an initial gate-off voltage, which serves as a reference for the voltage adjusting module. The voltage adjusting module then fine-tunes this initial gate-off voltage to produce the final gate-off voltage applied to the power switch. This adjustment ensures the gate-off voltage is dynamically optimized based on operating conditions, reducing power consumption and improving circuit reliability. The integration of the power integrating circuit with the voltage adjusting module allows for real-time adjustments, adapting to variations in load, temperature, or other environmental factors. This solution enhances energy efficiency and extends the lifespan of power management systems.
7. The device of claim 5 , wherein a number of the photosensitive element is four, and the photosensitive elements are disposed on four edges of a rectangular display panel, or at four corners of a rectangular display panel, respectively.
8. The device of claim 4 , wherein the voltage adjusting module compares the contrast with an initial contrast, and each time when the difference between the contrast and the initial contrast is greater than a set threshold value, the voltage adjusting module increases the gate-off voltage of the display panel on the basis of an initial gate-off voltage with a set value.
9. A display apparatus, comprising a display panel and the device for adjusting the gate-off voltage of claim 4 .
10. The display apparatus of claim 9 , wherein the photosensitive element is a photosensitive resistor, a photosensitive optical fiber or an optical lens.
11. The display apparatus of claim 9 , wherein the device for adjusting the gate-off voltage further comprises: a power integrating circuit connecting to the voltage adjusting module and configuring to generate an initial gate-off voltage, such that the voltage adjusting module adjusts the gate-off voltage on the basis of the initial gate-off voltage.
This invention relates to display apparatuses, specifically addressing the challenge of dynamically adjusting gate-off voltages in display panels to improve performance and reliability. The apparatus includes a voltage adjusting module that modifies the gate-off voltage applied to a display panel, ensuring optimal operation under varying conditions. The voltage adjusting module is connected to a power integrating circuit, which generates an initial gate-off voltage. The voltage adjusting module then fine-tunes this initial voltage to produce the final gate-off voltage applied to the display panel. This adjustment helps maintain consistent display quality, reduce power consumption, and extend the lifespan of the display components. The power integrating circuit ensures a stable initial voltage, while the voltage adjusting module provides precise control over the final gate-off voltage, adapting to changes in temperature, usage patterns, or other environmental factors. This system enhances the overall efficiency and reliability of the display apparatus.
12. The display apparatus of claim 9 , wherein a number of the photosensitive members is four, and the photosensitive elements are disposed on four edges of a rectangular display panel, or at four corners of a rectangular display panel, respectively.
13. The display apparatus of claim 9 , wherein the contrast detecting module comprises a plurality of photosensitive elements disposed at an edge of the display panel; and wherein the contrast detecting module further comprises: a brightness obtaining unit connecting to the plurality of photosensitive elements and configuring to obtain maximum values and minimum values of the display brightness of the display panel by the plurality of the photosensitive elements, respectively; a contrast obtaining unit connected to the brightness obtaining unit for transmitting the maximum values and the minimum values of the display brightness to the system board or the control board, respectively, such that the system board or the control panel obtains a plurality of sets of contrast measurement values based on the plurality of sets of the display brightness, and the contrast is obtained by averaging the plurality of sets of contrast measurement values.
14. The display apparatus of claim 9 , wherein the voltage adjusting module compares the contrast with an initial contrast, and each time when the difference between the contrast and the initial contrast is greater than a set threshold value, the gate-off voltage of the display panel is increased on the basis of the initial gate-off voltage with a set value.
15. A method for adjusting a display panel, the display panel includes a thin film transistor, a gate of the thin film transistor receives a first voltage signal, the method for adjusting the display panel comprising: obtaining a maximum brightness value and a minimum brightness value of the display panel at a first time by a photosensitive element, and calculating a contrast of the first time based on the maximum brightness value and the minimum brightness value at the first time by a contrast detecting module; obtaining a maximum brightness value and a minimum brightness value of the display panel at a second time by the photosensitive element, and calculating a contrast of the second time based on the maximum brightness value and the minimum brightness value at the second time by the contrast detecting module; calculating a difference between the contrast of the second time and the contrast of the first time obtained from the contrast detecting module by a voltage adjusting module; calculating a first increment based on the difference between the contrast of the second time and the contrast of the first time by the voltage adjusting module; and adding the first voltage signal with the first increment by the voltage adjusting module.
16. The method of claim 15 , wherein the photosensitive element is a photoresistor, a photosensitive optical fiber or an optical lens.
17. The method of claim 15 , wherein a number of the photosensitive elements is at least four, and the photosensitive elements are disposed on four edges of a rectangular display panel, or at four corners of a rectangular display panel, respectively.
18. The method of claim 15 , wherein the second time is after the first time, and a time interval between the second time and the first time is 6 hours.
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April 13, 2021
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